After 2017-12-23     <<< utils >>>

2018-08-18  Program 'hgeoidcal' was updated, so as to fix a bug.


2019-12-10  Patch file "utils_201912.patch" was generated for above update.

----

2020-11-16  Patch file "utils_202011.patch" was generated
            as same as "utils_201912.patch".

----

2022-01-23  Patch file "utils_202201.patch" was generated
            as same as "utils_202011.patch".

----