1 files changed, 14 insertions, 0 deletions
diff --git a/unix/boot/spp/rpp/ratlibf/wkday.f b/unix/boot/spp/rpp/ratlibf/wkday.f
new file mode 100644
index 00000000..69d80796
--- /dev/null
+++ b/unix/boot/spp/rpp/ratlibf/wkday.f
@@ -0,0 +1,14 @@
+      integer function wkday (month, day, year)
+      integer month, day, year
+      integer lmonth, lday, lyear
+      lmonth = month - 2
+      lday = day
+      lyear = year
+      if (.not.(lmonth .le. 0))goto 23000
+      lmonth = lmonth + 12
+      lyear = lyear - 1
+23000 continue
+      wkday = mod (lday + (26 * lmonth - 2) / 10 + lyear + lyear / 4 - 3
+     *4, 7) + 1
+      return
+      end