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The determination of the beginning of the lunar month is an important issue in religious practice and the establishment of the Hijri calendar in Indonesia. The diversity of imkan rukyat criteria used across countries necessitates an evaluation of international standards, including the 2016 Turkish Criteria, which are considered more progressive with parameters of a minimum crescent altitude of 5° and an elongation of 8°. This article examines the relevance of the 2016 Turkish Criteria within the astronomical and jurisprudential context of Indonesia, as well as its implications for the process of determining the beginning of the lunar month by the government and Islamic organizations. Through literature review, comparative astronomical analysis, and examination of hisab–rukyat practices in recent years, this study finds that the 2016 Turkish Criteria exhibit strong astronomical consistency and can enhance calendar predictability. However, its application in Indonesia may lead to discrepancies with the government’s criteria, which currently require a crescent altitude of 3° and an elongation of 6.4°. These implications include potential differences in month beginnings, the need for harmonizing criteria, and the importance of dialogue between national and international astronomical authorities. This study recommends strengthening astronomical and jurisprudential assessments prior to adopting new criteria and encourages the integration of global data to improve the accuracy of the Hijri calendar in Indonesia.

This research discusses Indonesia's national identity in the framework of citizenship using the perspective of Fiqh Siyasah. The background of this research is the importance of integrating Islamic values in strengthening a pluralistic national identity in the midst of the social, political, and cultural dynamics of modern society. The purpose of this study is to examine the relationship between the concept of modern citizenship and the principles of Fiqh Siyasah and its implications for strengthening national identity. The research method used is a qualitative study with a literature analysis approach, which allows the author to explore various classical and contemporary sources related to the concept of citizenship in Islam and its application in Indonesia. The results of the study show that the values of Fiqh Siyasah, such as justice, benefit, and unity, can be a moral and ethical foundation in strengthening Indonesia's inclusive, democratic, and equitable national identity. In addition, its implementation can strengthen the sense of responsibility of citizens in maintaining the stability of the nation. The conclusion of the study emphasizes the importance of collaboration between Islamic thought and national principles to build a sustainable national identity that is adaptive to the changing times.

This study aims to analyze and evaluate the management of public ownership (milkiyah 'ammah) and state ownership (milkiyah daulah) in Indonesia. This study describes in a qualitative descriptive way the current management of public ownership and state ownership in Indonesia. The theoretical approach is used for the Islamic economic system approach which assesses the practical implementation of the management of shared wealth and the wealth of the Indonesian State. The data used in this study are secondary data obtained from literature, journals and information related to Indonesia's wealth. The data collection technique used is library research. And this study uses a comparative analysis of the implementation of public ownership management and state ownership management that is not in accordance with ownership management in Islam. Evidence shows that public ownership and state ownership are not fully managed by the State of Indonesia, it appears that shared ownership in the form of water, fire and pasture is managed by individuals and institutions of foreign parties who have the capital to privatize public ownership. This will have an impact on the unequal distribution of income earned by people who have capital and those who do not have capital, so that it will have an impact on prosperity that most Indonesian people cannot have. As an evaluation and solution, it is necessary to implement an Islamic economic system in managing joint ownership and control of the Indonesian state.