diff --git a/home/private_dot_config/zsh/conf.d/aliases.zsh b/home/private_dot_config/zsh/conf.d/aliases.zsh
index b2e995a..2634aa2 100644
--- a/home/private_dot_config/zsh/conf.d/aliases.zsh
+++ b/home/private_dot_config/zsh/conf.d/aliases.zsh
@@ -19,10 +19,9 @@ alias mkrt='make -C $(git rev-parse --show-toplevel)'
 alias mk="make"
 alias mkc="make -C"
 
-alias yyyymmdd='date +%Y%m%d'
-alias ds='date +%Y-%m-%d'
-alias ts='date +%Y-%m-%dT%H:%M:%SZ'
-alias today="date +'%Y.%m.%d'"
+# alias yyyymmdd='date +%Y%m%d'
+# alias ds='date +%Y-%m-%d'
+alias timestamp='date +%Y-%m-%dT%H:%M:%SZ'
 
 # url encode/decode
 alias urldecode='python3 -c "import sys, urllib.parse as ul; \
diff --git a/home/private_dot_config/zsh/functions/executable_today b/home/private_dot_config/zsh/functions/executable_today
new file mode 100644
index 0000000..1b03c5f
--- /dev/null
+++ b/home/private_dot_config/zsh/functions/executable_today
@@ -0,0 +1,4 @@
+#!/usr/bin/env zsh
+
+local sep=${1:-}
+date "+%Y${sep}%m${sep}%d"