The exact date of effective publication of any new name is important for citation purposes and essential for establishing priority of names (Art. 11 of the Shenzhen Code – Turland & al. in Regnum Veg. 159. 2018). Unfortunately, it is often very hard or impossible, especially for the older and/or less‐known sources, to determine the publication date with necessary precision (i.e. to the day). This might cause controversy, e.g. in case of almost‐parallel publication of the same name or of different names applicable to the same taxon. Several papers in journals, books, or preprints that bear only the calendar year, month, or range of dates (e.g. January–March) must sometimes be temporally compared to determine the order of precedence. For the sake of caution and certainty, the last day of a respective time period seems a rational determination of the precise date of publication for nomenclatural purposes. Although this solution has not been employed in the Shenzhen Code (nor previous editions), for other reasons, when fixing starting dates in Art. 13, it seems that this would help to solve many potential controversies as to the priority of names published afterward. A similar solution was accepted in Art. 21.3 of the International Code of Zoological Nomenclature (ed. 4, International Commission on Zoological Nomenclature. 1999; https://www.iczn.org/the‐code/the‐international‐code‐of‐zoological‐nomenclature/the‐code‐online/ accessed 30 Dec 2019). Therefore, we propose the following.

任何新名称的有效发布确切日期对于引用目的都很重要，并且对于确定名称的优先顺序至关重要（《深圳法典》第11条）– Turland等。在Regnum Veg中。159.2018）。不幸的是，通常很难或不可能，特别是对于较早和/或鲜为人知的来源，要以必要的精度（即当天）确定发布日期。这可能会引起争议，例如，在几乎平行发布相同名称或适用于同一分类单元的不同名称的情况下。有时必须暂时比较期刊，书籍或预印本中仅载有日历年，月或日期范围（例如1月至3月）的几篇论文，以确定优先顺序。为了谨慎和确定起见，各个时间段的最后一天似乎是出于命名目的合理确定确切发布日期的原因。尽管此解决方案尚未在《深圳法规》中采用（以及以前的版本），由于其他原因，当您在Art中确定开始日期时。如图13所示，这似乎将有助于解决许多有关后来公布的名称优先权的潜在争议。Art也接受了类似的解决方案。《国际动物命名法典》第21.3条（第4版，国际动物学命名委员会.1999年; https：//www.iczn.org/the-code/the-international-code-of-zoologic-nomenclature/the-code在线/于2019年12月30日访问）。因此，我们提出以下建议。